| /* |
| * Copyright (c) 2018, Alliance for Open Media. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef AOM_AV1_COMMON_ARM_CONVOLVE_NEON_H_ |
| #define AOM_AV1_COMMON_ARM_CONVOLVE_NEON_H_ |
| |
| #include <arm_neon.h> |
| |
| #define HORIZ_EXTRA_ROWS ((SUBPEL_TAPS + 7) & ~0x07) |
| |
| static INLINE int16x4_t convolve8_4(const int16x4_t s0, const int16x4_t s1, |
| const int16x4_t s2, const int16x4_t s3, |
| const int16x4_t s4, const int16x4_t s5, |
| const int16x4_t s6, const int16x4_t s7, |
| const int16x8_t filters, |
| const int16x4_t filter3, |
| const int16x4_t filter4) { |
| const int16x4_t filters_lo = vget_low_s16(filters); |
| const int16x4_t filters_hi = vget_high_s16(filters); |
| int16x4_t sum; |
| |
| sum = vmul_lane_s16(s0, filters_lo, 0); |
| sum = vmla_lane_s16(sum, s1, filters_lo, 1); |
| sum = vmla_lane_s16(sum, s2, filters_lo, 2); |
| sum = vmla_lane_s16(sum, s5, filters_hi, 1); |
| sum = vmla_lane_s16(sum, s6, filters_hi, 2); |
| sum = vmla_lane_s16(sum, s7, filters_hi, 3); |
| sum = vqadd_s16(sum, vmul_s16(s3, filter3)); |
| sum = vqadd_s16(sum, vmul_s16(s4, filter4)); |
| return sum; |
| } |
| |
| static INLINE uint8x8_t convolve8_8(const int16x8_t s0, const int16x8_t s1, |
| const int16x8_t s2, const int16x8_t s3, |
| const int16x8_t s4, const int16x8_t s5, |
| const int16x8_t s6, const int16x8_t s7, |
| const int16x8_t filters, |
| const int16x8_t filter3, |
| const int16x8_t filter4) { |
| const int16x4_t filters_lo = vget_low_s16(filters); |
| const int16x4_t filters_hi = vget_high_s16(filters); |
| int16x8_t sum; |
| |
| sum = vmulq_lane_s16(s0, filters_lo, 0); |
| sum = vmlaq_lane_s16(sum, s1, filters_lo, 1); |
| sum = vmlaq_lane_s16(sum, s2, filters_lo, 2); |
| sum = vmlaq_lane_s16(sum, s5, filters_hi, 1); |
| sum = vmlaq_lane_s16(sum, s6, filters_hi, 2); |
| sum = vmlaq_lane_s16(sum, s7, filters_hi, 3); |
| sum = vqaddq_s16(sum, vmulq_s16(s3, filter3)); |
| sum = vqaddq_s16(sum, vmulq_s16(s4, filter4)); |
| return vqrshrun_n_s16(sum, 7); |
| } |
| |
| static INLINE uint8x8_t scale_filter_8(const uint8x8_t *const s, |
| const int16x8_t filters) { |
| const int16x8_t filter3 = vdupq_lane_s16(vget_low_s16(filters), 3); |
| const int16x8_t filter4 = vdupq_lane_s16(vget_high_s16(filters), 0); |
| int16x8_t ss[8]; |
| |
| ss[0] = vreinterpretq_s16_u16(vmovl_u8(s[0])); |
| ss[1] = vreinterpretq_s16_u16(vmovl_u8(s[1])); |
| ss[2] = vreinterpretq_s16_u16(vmovl_u8(s[2])); |
| ss[3] = vreinterpretq_s16_u16(vmovl_u8(s[3])); |
| ss[4] = vreinterpretq_s16_u16(vmovl_u8(s[4])); |
| ss[5] = vreinterpretq_s16_u16(vmovl_u8(s[5])); |
| ss[6] = vreinterpretq_s16_u16(vmovl_u8(s[6])); |
| ss[7] = vreinterpretq_s16_u16(vmovl_u8(s[7])); |
| |
| return convolve8_8(ss[0], ss[1], ss[2], ss[3], ss[4], ss[5], ss[6], ss[7], |
| filters, filter3, filter4); |
| } |
| |
| static INLINE uint8x8_t wiener_convolve8_vert_4x8( |
| const int16x8_t s0, const int16x8_t s1, const int16x8_t s2, |
| const int16x8_t s3, const int16x8_t s4, const int16x8_t s5, |
| const int16x8_t s6, int16_t *filter_y, const int bd, |
| const int round1_bits) { |
| int16x8_t ss0, ss1, ss2; |
| int32x4_t sum0, sum1; |
| uint16x4_t tmp0, tmp1; |
| uint16x8_t tmp; |
| uint8x8_t res; |
| |
| const int32_t round_const = (1 << (bd + round1_bits - 1)); |
| const int32x4_t round_bits = vdupq_n_s32(-round1_bits); |
| const int32x4_t zero = vdupq_n_s32(0); |
| const int32x4_t round_vec = vdupq_n_s32(round_const); |
| |
| ss0 = vaddq_s16(s0, s6); |
| ss1 = vaddq_s16(s1, s5); |
| ss2 = vaddq_s16(s2, s4); |
| |
| sum0 = vmull_n_s16(vget_low_s16(ss0), filter_y[0]); |
| sum0 = vmlal_n_s16(sum0, vget_low_s16(ss1), filter_y[1]); |
| sum0 = vmlal_n_s16(sum0, vget_low_s16(ss2), filter_y[2]); |
| sum0 = vmlal_n_s16(sum0, vget_low_s16(s3), filter_y[3]); |
| |
| sum1 = vmull_n_s16(vget_high_s16(ss0), filter_y[0]); |
| sum1 = vmlal_n_s16(sum1, vget_high_s16(ss1), filter_y[1]); |
| sum1 = vmlal_n_s16(sum1, vget_high_s16(ss2), filter_y[2]); |
| sum1 = vmlal_n_s16(sum1, vget_high_s16(s3), filter_y[3]); |
| |
| sum0 = vsubq_s32(sum0, round_vec); |
| sum1 = vsubq_s32(sum1, round_vec); |
| |
| /* right shift & rounding */ |
| sum0 = vrshlq_s32(sum0, round_bits); |
| sum1 = vrshlq_s32(sum1, round_bits); |
| |
| sum0 = vmaxq_s32(sum0, zero); |
| sum1 = vmaxq_s32(sum1, zero); |
| |
| /* from int32x4_t to uint8x8_t */ |
| tmp0 = vqmovn_u32(vreinterpretq_u32_s32(sum0)); |
| tmp1 = vqmovn_u32(vreinterpretq_u32_s32(sum1)); |
| tmp = vcombine_u16(tmp0, tmp1); |
| res = vqmovn_u16(tmp); |
| |
| return res; |
| } |
| |
| static INLINE uint16x8_t wiener_convolve8_horiz_8x8( |
| const int16x8_t s0, const int16x8_t s1, const int16x8_t s2, |
| const int16x8_t s3, int16_t *filter_x, const int bd, |
| const int round0_bits) { |
| int16x8_t sum; |
| uint16x8_t res; |
| int32x4_t sum_0, sum_1; |
| int32x4_t s3_0, s3_1; |
| const int32_t round_const_0 = (1 << (bd + FILTER_BITS - 1)); |
| const int32_t round_const_1 = (1 << (bd + 1 + FILTER_BITS - round0_bits)) - 1; |
| |
| /* for the purpose of right shift by { conv_params->round_0 } */ |
| const int32x4_t round_bits = vdupq_n_s32(-round0_bits); |
| |
| const int32x4_t round_vec_0 = vdupq_n_s32(round_const_0); |
| const int32x4_t round_vec_1 = vdupq_n_s32(round_const_1); |
| |
| sum = vmulq_n_s16(s0, filter_x[0]); |
| sum = vmlaq_n_s16(sum, s1, filter_x[1]); |
| sum = vmlaq_n_s16(sum, s2, filter_x[2]); |
| |
| /* sum from 16x8 to 2 32x4 registers */ |
| sum_0 = vmovl_s16(vget_low_s16(sum)); |
| sum_1 = vmovl_s16(vget_high_s16(sum)); |
| |
| /* s[3]*128 -- and filter coef max can be 128 |
| * then max value possible = 128*128*255 exceeding 16 bit |
| */ |
| |
| s3_0 = vmull_n_s16(vget_low_s16(s3), filter_x[3]); |
| s3_1 = vmull_n_s16(vget_high_s16(s3), filter_x[3]); |
| sum_0 = vaddq_s32(sum_0, s3_0); |
| sum_1 = vaddq_s32(sum_1, s3_1); |
| |
| /* Add the constant value */ |
| sum_0 = vaddq_s32(sum_0, round_vec_0); |
| sum_1 = vaddq_s32(sum_1, round_vec_0); |
| |
| /* right shift & rounding & saturating */ |
| sum_0 = vqrshlq_s32(sum_0, round_bits); |
| sum_1 = vqrshlq_s32(sum_1, round_bits); |
| |
| /* Clipping to max value */ |
| sum_0 = vminq_s32(sum_0, round_vec_1); |
| sum_1 = vminq_s32(sum_1, round_vec_1); |
| |
| res = vcombine_u16(vqmovun_s32(sum_0), vqmovun_s32(sum_1)); |
| return res; |
| } |
| |
| static INLINE uint16x4_t wiener_convolve8_horiz_4x8( |
| const int16x4_t s0, const int16x4_t s1, const int16x4_t s2, |
| const int16x4_t s3, const int16x4_t s4, const int16x4_t s5, |
| const int16x4_t s6, int16_t *filter_x, const int bd, |
| const int round0_bits) { |
| uint16x4_t res; |
| int32x4_t sum_0, s3_0; |
| int16x4_t sum, temp0, temp1, temp2; |
| |
| const int32_t round_const_0 = (1 << (bd + FILTER_BITS - 1)); |
| const int32_t round_const_1 = (1 << (bd + 1 + FILTER_BITS - round0_bits)) - 1; |
| const int32x4_t round_bits = vdupq_n_s32(-round0_bits); |
| const int32x4_t zero = vdupq_n_s32(0); |
| const int32x4_t round_vec_0 = vdupq_n_s32(round_const_0); |
| const int32x4_t round_vec_1 = vdupq_n_s32(round_const_1); |
| |
| temp0 = vadd_s16(s0, s6); |
| temp1 = vadd_s16(s1, s5); |
| temp2 = vadd_s16(s2, s4); |
| |
| sum = vmul_n_s16(temp0, filter_x[0]); |
| sum = vmla_n_s16(sum, temp1, filter_x[1]); |
| sum = vmla_n_s16(sum, temp2, filter_x[2]); |
| sum_0 = vmovl_s16(sum); |
| |
| /* s[3]*128 -- and filter coff max can be 128. |
| * then max value possible = 128*128*255 Therefore, 32 bits are required to |
| * hold the result. |
| */ |
| s3_0 = vmull_n_s16(s3, filter_x[3]); |
| sum_0 = vaddq_s32(sum_0, s3_0); |
| |
| sum_0 = vaddq_s32(sum_0, round_vec_0); |
| sum_0 = vrshlq_s32(sum_0, round_bits); |
| |
| sum_0 = vmaxq_s32(sum_0, zero); |
| sum_0 = vminq_s32(sum_0, round_vec_1); |
| res = vqmovun_s32(sum_0); |
| return res; |
| } |
| |
| static INLINE int16x8_t |
| convolve8_8x8_s16(const int16x8_t s0, const int16x8_t s1, const int16x8_t s2, |
| const int16x8_t s3, const int16x8_t s4, const int16x8_t s5, |
| const int16x8_t s6, const int16x8_t s7, const int16_t *filter, |
| const int16x8_t horiz_const, const int16x8_t shift_round_0) { |
| int16x8_t sum; |
| int16x8_t res; |
| |
| sum = horiz_const; |
| sum = vmlaq_n_s16(sum, s0, filter[0]); |
| sum = vmlaq_n_s16(sum, s1, filter[1]); |
| sum = vmlaq_n_s16(sum, s2, filter[2]); |
| sum = vmlaq_n_s16(sum, s3, filter[3]); |
| sum = vmlaq_n_s16(sum, s4, filter[4]); |
| sum = vmlaq_n_s16(sum, s5, filter[5]); |
| sum = vmlaq_n_s16(sum, s6, filter[6]); |
| sum = vmlaq_n_s16(sum, s7, filter[7]); |
| |
| res = vqrshlq_s16(sum, shift_round_0); |
| |
| return res; |
| } |
| |
| static INLINE int16x4_t |
| convolve8_4x4_s16(const int16x4_t s0, const int16x4_t s1, const int16x4_t s2, |
| const int16x4_t s3, const int16x4_t s4, const int16x4_t s5, |
| const int16x4_t s6, const int16x4_t s7, const int16_t *filter, |
| const int16x4_t horiz_const, const int16x4_t shift_round_0) { |
| int16x4_t sum; |
| sum = horiz_const; |
| sum = vmla_n_s16(sum, s0, filter[0]); |
| sum = vmla_n_s16(sum, s1, filter[1]); |
| sum = vmla_n_s16(sum, s2, filter[2]); |
| sum = vmla_n_s16(sum, s3, filter[3]); |
| sum = vmla_n_s16(sum, s4, filter[4]); |
| sum = vmla_n_s16(sum, s5, filter[5]); |
| sum = vmla_n_s16(sum, s6, filter[6]); |
| sum = vmla_n_s16(sum, s7, filter[7]); |
| |
| sum = vqrshl_s16(sum, shift_round_0); |
| |
| return sum; |
| } |
| |
| static INLINE uint16x4_t convolve8_4x4_s32( |
| const int16x4_t s0, const int16x4_t s1, const int16x4_t s2, |
| const int16x4_t s3, const int16x4_t s4, const int16x4_t s5, |
| const int16x4_t s6, const int16x4_t s7, const int16_t *y_filter, |
| const int32x4_t round_shift_vec, const int32x4_t offset_const) { |
| int32x4_t sum0; |
| uint16x4_t res; |
| const int32x4_t zero = vdupq_n_s32(0); |
| |
| sum0 = vmull_n_s16(s0, y_filter[0]); |
| sum0 = vmlal_n_s16(sum0, s1, y_filter[1]); |
| sum0 = vmlal_n_s16(sum0, s2, y_filter[2]); |
| sum0 = vmlal_n_s16(sum0, s3, y_filter[3]); |
| sum0 = vmlal_n_s16(sum0, s4, y_filter[4]); |
| sum0 = vmlal_n_s16(sum0, s5, y_filter[5]); |
| sum0 = vmlal_n_s16(sum0, s6, y_filter[6]); |
| sum0 = vmlal_n_s16(sum0, s7, y_filter[7]); |
| |
| sum0 = vaddq_s32(sum0, offset_const); |
| sum0 = vqrshlq_s32(sum0, round_shift_vec); |
| sum0 = vmaxq_s32(sum0, zero); |
| res = vmovn_u32(vreinterpretq_u32_s32(sum0)); |
| |
| return res; |
| } |
| |
| #endif // AOM_AV1_COMMON_ARM_CONVOLVE_NEON_H_ |